Need help with rule (Velux windows controlled from outside temp, alarm and Lumiance), now optimizing

[vzorglub (Vincent Regaud)]

There is good advice on that thread:

Working with Number:Temperature item type

I recently started using the Wunderground binding, which exposes things with the type of Number:Temperature. PaperUI and HABmin both filter the items to which I can link these things so that only items of the Number:Temperature type are available. That’s not a problem in itself, and the linking works just fine. I can see the the Number:Temperature has the benefit of applying a specific format whenever it’s converted to string on the UI. That makes sense. The problem comes when I try to make com…